<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>图片切分器</title>
  <style>
    body {
      width: 300px;
      padding: 10px;
    }
  </style>
</head>
<body>
  <h2>图片切分器</h2>
  <input type="file" id="imageInput" accept="image/*">
  <button id="splitButton">切分并下载</button>
  <script src="popup.js"></script>
</body>
</html>